CN111602343B

CN111602343B - Terminal, wireless communication method, and wireless communication system

Info

Publication number: CN111602343B
Application number: CN201780098168.2A
Authority: CN
Inventors: 松村祐辉; 武田一树; 永田聪; 王理惠
Original assignee: NTT Docomo Inc
Current assignee: NTT Docomo Inc
Priority date: 2017-11-16
Filing date: 2017-11-16
Publication date: 2022-08-23
Anticipated expiration: 2037-11-16
Also published as: EP3713099A1; MX2020005011A; JP7129741B2; JPWO2019097658A1; US11601160B2; WO2019097658A1; US20200280338A1; AU2017440171A1; PH12020550614A1; BR112020009806A2; EP3713099A4; CN111602343A; AU2017440171B2

Abstract

Inter-slot frequency hopping of the uplink channel/signal is appropriately controlled. The user terminal of the present invention has: a transmission unit configured to transmit an uplink control channel spanning a plurality of slots; and a control unit configured to control frequency hopping of the uplink control channel among the plurality of time slots.

Description

Terminal, wireless communication method, and wireless communication system

Technical Field

The present invention relates to a terminal, a radio communication method, and a radio communication system in a next-generation mobile communication system.

Background

In a UMTS (Universal Mobile Telecommunications System) network, Long Term Evolution (LTE) is standardized for the purpose of higher data rate, lower latency, and the like (non-patent document 1). Further, for the purpose of further widening the bandwidth and increasing the speed of LTE, systems following LTE (for example, also referred to as LTE-a (LTE-Advanced), FRA (Future Radio Access), 4G, 5G + (plus), NR (new rat), LTE rel.14, 15, and the like) are also discussed.

In conventional LTE systems (e.g., LTE rel.8 to 13), Downlink (DL: Downlink) and/or Uplink (UL: Uplink) communication is performed using a subframe of 1ms (also referred to as a Transmission Time Interval (TTI), etc.). This subframe is a transmission time unit of 1 data packet subjected to channel coding, and is a processing unit of scheduling, link adaptation, retransmission control (Hybrid Automatic Repeat reQuest), and the like.

In addition, in conventional LTE systems (e.g., LTE rel.8 to 13), a user terminal transmits Uplink Control Information (UCI) using an Uplink Control Channel (e.g., a Physical Uplink Control Channel) or an Uplink data Channel (e.g., a Physical Uplink Shared Channel). The structure (Format) of the uplink control channel is called PUCCH Format (PF: PUCCH Format) or the like.

Documents of the prior art

Non-patent document

Non-patent document 1: 3GPP TS 36.300V8.12.0 "Evolved Universal Radio Access (E-UTRA) and Evolved Universal Radio Access Network (E-UTRAN); (ii) an Overall description; stage 2(Release 8) ", 4 months 2010

Disclosure of Invention

Problems to be solved by the invention

In future wireless communication systems (e.g., LTE rel.14, 15, 5G, NR, etc.), introduction of an uplink channel and/or an uplink Signal (uplink channel/Signal) spanning multiple slots (e.g., at least one of an uplink control channel (PUCCH), an uplink data channel (PUSCH), a Sounding Reference Signal (SRS), etc.) is being discussed. In addition, it is under discussion to apply frequency hopping (Inter-slot frequency hopping) that hops the frequency resource to which the uplink channel/signal is mapped among the plurality of slots.

Here, the access BW may also be referred to as a Carrier (Component Carrier (CC) or system Band), a partial (partial) Band (partial Band) or Bandwidth part (BWP) within the Carrier, or the like.

In this way, in a future wireless communication system in which different access BWs can be set to a plurality of user terminals, it is desirable to appropriately control the inter-slot hopping pattern (hopping boundary (hopping) and/or the position of each frequency resource to be hopped) of the uplink channel/signal.

The present invention has been made in view of the above, and an object thereof is to provide a user terminal and a radio communication method capable of appropriately controlling inter-slot frequency hopping of an uplink channel/signal.

Means for solving the problems

An aspect of the user terminal of the present invention is characterized by including: a transmitting unit that transmits an uplink control channel spanning a plurality of slots; and a control unit configured to control frequency hopping of the uplink control channel among the plurality of time slots.

Effects of the invention

According to the present invention, inter-slot frequency hopping of an uplink channel/signal can be appropriately controlled.

Drawings

Fig. 1A and 1B are diagrams showing an example of a PUCCH in a future wireless communication system.

Fig. 2 is a diagram showing an example of a PUCCH format in a future wireless communication system.

Fig. 3A and 3B are diagrams illustrating an example of intra-slot frequency hopping of the PUCCH.

Fig. 4A and 4B are diagrams illustrating an example of a long PUCCH spanning multiple slots.

Fig. 5A to 5D are diagrams showing an example of inter-slot frequency hopping according to the first aspect.

Fig. 6A to 6D are diagrams showing an example of frequency offset in the case where the inter-slot hopping according to the first aspect is applied.

Fig. 7A and 7B are diagrams showing a modification example of the frequency offset in the case where the inter-slot hopping according to the first aspect is applied.

Fig. 8A to 8D are diagrams showing an example of multiplexing of a plurality of user terminals when the inter-slot frequency hopping according to the first aspect is applied.

Fig. 9A to 9C are diagrams showing an example of determination of frequency resources of PUCCH/PUSCH to which inter-slot frequency hopping according to the second embodiment is applied.

Fig. 10A and 10B are diagrams showing a first example of a transition boundary of inter-slot frequency hopping according to the third embodiment.

Fig. 11A and 11B are diagrams showing a second example of determination of a hopping boundary in inter-slot hopping according to the third embodiment.

Fig. 12A and 12B are diagrams illustrating an example of a PUCCH resource set according to the fourth aspect.

Fig. 13 is a diagram illustrating an example of DCI according to the fifth embodiment.

Fig. 14A to 14C are diagrams showing an example of an association field in DCI according to the fifth embodiment.

Fig. 15 is a diagram showing an example of a schematic configuration of a wireless communication system according to the present embodiment.

Fig. 16 is a diagram showing an example of the overall configuration of the radio base station according to the present embodiment.

Fig. 17 is a diagram showing an example of a functional configuration of the radio base station according to the present embodiment.

Fig. 18 is a diagram showing an example of the overall configuration of the user terminal according to the present embodiment.

Fig. 19 is a diagram showing an example of a functional configuration of the user terminal according to the present embodiment.

Fig. 20 is a diagram showing an example of hardware configurations of the radio base station and the user terminal according to the present embodiment.

Detailed Description

In the conventional LTE system (prior to LTE rel.13), uplink control channels (e.g., PUCCH) of a plurality of formats (e.g., LTE PUCCH formats (LTE PF)1 to 5) in the same period (e.g., 14 symbols in the case of a normal Cyclic Prefix (CP)) are supported.

In future wireless communication systems (e.g., LTE rel.15, 5G, NR, etc.), UCI is being discussed to be transmitted using an uplink control channel (e.g., PUCCH) of a plurality of formats (e.g., NR PUCCH format (NR PF), also referred to simply as PUCCH format) that differ at least in time.

Fig. 1 is a diagram showing an example of a PUCCH in a future wireless communication system. Fig. 1 shows a PUCCH (short PUCCH or first uplink control channel) having a relatively small number of symbols (duration), for example, 1 to 2 symbols. Fig. 1B shows a PUCCH (long PUCCH or second uplink control channel) composed of a larger number of symbols (for example, 4 to 14 symbols) than a short PUCCH.

As shown in fig. 1A, the short PUCCH can be allocated with a predetermined number of symbols (e.g., 1 to 2 symbols) from the last of the slot (PUCCH period). The allocation symbol of the short PUCCH is not limited to the last of the slot, and may be a predetermined number of symbols at the beginning or in the middle of the slot. The starting position of the short PUCCH in the time direction within the slot may be represented by an index of a starting symbol.

In addition, the short PUCCH is configured in one or more frequency resources (e.g., one or more PRBs). In fig. 1A, the short PUCCH is arranged in a continuous PRB, but may be arranged in a discontinuous PRB.

In addition, the short PUCCH may be time-division multiplexed and/or frequency-division multiplexed with an uplink data channel (hereinafter, also referred to as PUSCH) within a slot. The short PUCCH may be time-division multiplexed and/or frequency-division multiplexed with a Downlink data Channel (hereinafter also referred to as PDSCH) and/or a Downlink Control Channel (hereinafter also referred to as PDCCH).

In the short PUCCH, a multi-carrier waveform (for example, an OFDM (Orthogonal Frequency Division Multiplexing) waveform) may be used, or a single-carrier waveform (for example, a DFT-s-OFDM (Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing) waveform) may be used.

In addition, the format of the short PUCCH may be, for example, PUCCH Format (PF)0 or 2. The format of the short PUCCH may also be different according to the number of bits of the UCI (e.g., whether 2bits or less (up to 2bits) or more (more than 2 bits)). For example, PUCCH format 0 may be used for UCI of 2bits or less, and PUCCH format 2 may be used for UCI of more than 2bits (see fig. 2).

On the other hand, as shown in fig. 1B, the long PUCCH may be arranged across a larger number of symbols (e.g., 4 to 14 symbols) (PUCCH period) than the short PUCCH. In fig. 1B, the long PUCCH is not allocated to the first predetermined number of symbols of the slot, but may be allocated to the first predetermined number of symbols. The starting position of the long PUCCH in the time direction within the slot may also be represented by an index of the starting symbol.

As shown in fig. 1B, the long PUCCH may be formed of a smaller number of frequency resources (e.g., 1 or 2 PRBs) than the short PUCCH, or may be formed of the same number of frequency resources as the short PUCCH, in order to obtain a power boosting effect.

In addition, the long PUCCH may also be frequency division multiplexed with the PUSCH within a slot. Furthermore, the long PUCCH may be time division multiplexed with the PDCCH within the slot. The long PUCCH may be configured in the same slot as the short PUCCH. In the long PUCCH, a single-carrier waveform (for example, DFT-s-OFDM waveform, or an OFDM waveform using a cazac (constant Amplitude Zero Auto correlation) sequence (for example, cgs (computer Generated sequence) or zaldoff-chu sequence) for a reference sequence of a transmission signal) may be used, or a multi-carrier waveform (for example, OFDM waveform) may be used.

The format of the long PUCCH may be, for example, PUCCH Format (PF)1, 3, or 4. The format of the long PUCCH may be different according to the number of bits of the UCI (e.g., up to 2bits or more than 2 bits). For example, PUCCH format 1 may be used for UCI of 2bits or less, and

PUCCH format

3 or 4 may be used for UCI of more than 2bits (see fig. 2).

In addition, the long PUCCH format may also be controlled based on the number N of bits of the UCI. For example, PUCCH format 3 may be used for UCI of more than N bits (or more than N bits), and PUCCH format 4 may be used for UCI of less than N bits (or less than N bits) and more than 2bits (see fig. 2).

Fig. 2 is merely an example, and N may be 2 or N > 2. In fig. 2, N having different values may be used for PUCCH format 3 and PUCCH format 4. For example, N-2 may be used for PUCCH format 3 and N-100 may be used for PUCCH format 4.

The format of the long PUCCH may be different depending on whether or not block-spreading (e.g., block-spreading in the time domain using an Orthogonal spreading Code (OCC) is applied before DFT. For example, PUCCH format 3 may be used when block spreading before DFT is not applied, and PUCCH format 4 may be used when block spreading before DFT is applied. In PUCCH formats 1 and/or 4, block spreading after DFT (e.g., time domain block spreading using OCC) may be applied.

As shown in fig. 1B, frequency hopping (intra slot frequency hopping) in which frequency resources hop at a predetermined timing in one slot may be applied to the long PUCCH. Although not shown, similar intra-slot frequency hopping may be applied to a short PUCCH and/or PUSCH composed of a plurality of symbols.

Fig. 3 is a diagram illustrating an example of intra-slot frequency hopping of a PUCCH (e.g., long PUCCH). Although fig. 3A and 3B illustrate a long PUCCH as an example of a PUCCH, the present invention is also applicable to other uplink channels and signals such as a short PUCCH, a PUSCH, and an SRS.

As shown in fig. 3A and 3B, in the future wireless communication system, an accessible bandwidth (access bw) may be set (configuration) for each user terminal. Here, the access BW may also be referred to as a Carrier (Component Carrier (CC) or system Band), or a Partial (Partial) Band (Partial Band) or Bandwidth part (BWP) within the Carrier.

For example, in fig. 3A and 3B, the access BW of the user terminal #1 is set to be wider than the access BW of the user terminal # 2. The distances (offsets) between the frequency resources to which the PUCCH is mapped may be different between user terminals #1 and #2 having different access BWs (fig. 3A), or may be the same (fig. 3B).

In addition, it is also discussed that UCI can be transmitted using PUCCH spanning multiple slots in the future wireless communication system. Fig. 4 shows an example of a long PUCCH spanning multiple slots. Although fig. 4 illustrates a long PUCCH, the present invention is also applicable to other uplink channels and signals such as PUSCH and SRS.

As shown in fig. 4A and 4B, when the long PUCCH spans a plurality of slots, the period of the long PUCCH (PUCCH period) and/or the start symbol in each slot may be the same. Note that, although not shown, the PUCCH period and/or the start symbol in each slot may be different.

As shown in fig. 4A, in the long PUCCH spanning multiple slots, intra-slot frequency hopping may be applied to each slot. Alternatively, as shown in fig. 4B, in the long PUCCH spanning multiple slots, frequency hopping (inter-slot frequency hopping) may be applied in which frequency resources to which the long PUCCH is mapped are hopped among the multiple slots.

In addition, in the long PUCCH spanning multiple slots, intra-slot hopping (fig. 4A) and inter-slot hopping (fig. 4B) are not simultaneously applied to the same user terminal.

As described above, in future wireless communication systems (e.g., LTE rel.15 to 5G, NR), the access BW is assumed to be different for each user terminal (e.g., fig. 2). Therefore, it is desirable to flexibly control the inter-slot hopping pattern (for example, the position and hopping timing of each frequency resource to be hopped) of an uplink channel/signal (for example, at least one of the above-described long PUCCH, short PUCCH, PUSCH, SRS, and the like) for each user terminal.

Therefore, the present inventors have studied a method for flexibly controlling a pattern of inter-slot frequency hopping of an uplink channel/signal, and have completed the present invention.

The present embodiment will be described in detail below. Hereinafter, PUCCH and/or PUSCH (PUCCH/PUSCH) will be described as an example of an uplink channel/signal, but the present embodiment can be applied to other uplink channels and/or uplink signals such as SRS. Hereinafter, the long PUCCH and/or the short PUCCH are collectively referred to as "PUCCH".

(first mode)

In the first aspect, description will be made of frequency resources to which PUCCH/PUSCH is mapped and notification of information on the frequency resources when inter-slot frequency hopping is applied to the PUCCH/PUSCH spanning multiple slots.

When inter-slot hopping is applied to PUCCH/PUSCH spanning multiple slots, the frequency resources to which PUCCH/PUSCH are mapped may be hopped for each predetermined number of slots. The number of slots (hopping slot number) M for hopping the frequency resources of the PUCCH/PUSCH may be determined based on the number of slots to which the PUCCH/PUSCH is allocated, or may be specified by higher layer signaling and/or DCI.

Fig. 5 is a diagram showing an example of inter-slot frequency hopping according to the first embodiment. Fig. 5A to 5D show an example of inter-slot frequency hopping applied to PUCCH/PUSCH spanning multiple slots. Fig. 5A to 5D are merely examples, and the number of PUCCH/PUSCH mapped slots and/or the number of hopping slots M is not limited to the illustrated numbers. In fig. 5A to 5D, the frequency resource for each hop is composed of a predetermined number of resource units (for example, 1 or more PRBs or REs).

For example, in fig. 5A and 5B, the frequency resources of PUCCH/PUSCH are hopped per slot. As shown in fig. 5A, PUCCH/PUSCH spanning multiple slots may be mapped on different frequency resources per slot. Alternatively, as shown in fig. 5B, PUCCH/PUSCH spanning multiple slots may be mapped to the same frequency resource every predetermined number of slots (here, 2 slots).

In addition, in fig. 5A, the bandwidth of the frequency resource for each hop may be calculated based on the number of slots of BWP and PUCCH/PUSCH. In fig. 5B, the bandwidth between frequency resources for each hop may be calculated based on BWP (for example, by multiplying BWP by a predetermined coefficient).

Furthermore, in fig. 5C, the frequency resources of PUCCH/PUSCH spanning multiple slots are hopped only once. In fig. 5C, the number of hopping slots can also be determined based on the number of slots/2 allocated for PUCCH/PUSCH.

In fig. 5D, the frequency resources of the PUCCH/PUSCH are hopped for each hopping slot number M determined based on the slot number allocated to the PUCCH/PUSCH. The number of hopping slots M may be determined by using a table (for example, table 1 below) in which the number of hopping slots M is associated with the number of slots of the PUCCH/PUSCH.

For example, in fig. 5D, since the number of slots allocated to the PUCCH/PUSCH of the user terminal is 8, the user terminal may determine the number of hopping slots M "2" corresponding to the number of slots "8" of the PUCCH/PUSCH using table 1 below.

[ Table 1]

(Table 1)

M	Number of PUCCH/PUSCH slots
		1	1～4
2	5～8
		3	9～12
4	13～16
		…	…

Further, in fig. 5D, in the case where the slot index starts from 0, the transition boundary may be calculated according to the time slot immediately after N × M-1 (where N is 1,2, … …, ceil (N/M)). Here, as described above, M may be determined according to the number of slots allocated to the PUCCH/PUSCH. Furthermore, M may also be set by higher layer signaling. N may also be the number of slots allocated for PUCCH/PUSCH.

In the first aspect, when inter-slot frequency hopping is applied to a PUCCH/PUSCH spanning multiple slots, information (frequency resource information) on the frequency resource to which the PUCCH/PUSCH is mapped may be notified from the radio base station to the user terminal.

Here, the frequency Resource information may include information indicating an index (for example, an index of a PRB and/or a Resource Element (PRB/RE)) of a specific frequency Resource (for example, a first hopping (starting) frequency Resource), and information on other frequency resources (for example, frequency resources after the second hopping). The information on the other frequency resource may be, for example, information indicating a predetermined frequency offset (frequency offset information) or information indicating an index of the other frequency resource.

Fig. 6 is a diagram showing an example of frequency offset in the case where the inter-slot hopping according to the first aspect is applied. Fig. 6A to 6D illustrate the case where inter-slot hopping is applied within the BWP set for the user terminal, but the bandwidth to which inter-slot hopping is applied is not limited to the BWP, and may be any bandwidth as long as the user terminal accesses the BW.

In fig. 6A to 6D, an index # n (e.g., minimum index) of a predetermined resource unit (e.g., PRB/RE) of the frequency resource for notifying the user terminal of the first hop is set.

For example, as shown in fig. 6A and 6B, when hopping is performed on the frequency resources of PUCCH/PUSCH on a slot-by-slot basis, the radio base station may notify the user terminal of frequency offset information indicating a frequency offset k from the frequency resource of the previous (previous) hop.

In fig. 6A, the user terminal may determine an index # n + k (e.g., the smallest PRB index or RE index) of the frequency resource of the next slot (e.g., the frequency resource of the second hop (slot # 1)) based on the addition result of the index # n of the frequency resource of the previous hop (e.g., the frequency resource of the first hop (slot # 0)) and the frequency offset k (k ═ integer).

In fig. 6B, the user terminal may determine an index # n + k or a # (n + k) -k (e.g., the smallest PRB index or RE index) of a frequency resource (e.g., a frequency resource of the second, third, and fourth hops (slots #1, #2, # 3)) of a subsequent hop based on an addition result or a subtraction result of a frequency resource (e.g., an index # n of a frequency resource of the first hop (slot # 0)) and a frequency offset k (k ═ integer) of a previous hop.

Further, as shown in fig. 6C, when the frequency resource of the PUCCH/PUSCH hops only once, the radio base station may notify the user terminal of frequency offset information indicating the frequency offset k from the frequency resource of the first hop.

In fig. 6C, the user terminal may determine an index # n + k (e.g., the minimum PRB index or RE index) of the frequency resource for the second hop based on the addition result of the index # n of the frequency resource for the first hop and the frequency offset k (k is an integer).

Further, as shown in fig. 6D, when hopping is performed on the frequency resources of PUCCH/PUSCH by the number M of hopping slots, the radio base station may notify the user terminal of frequency offset information indicating the frequency offset k from the frequency resource of the previous hop.

In fig. 6D, the user terminal may determine the index of the frequency resource of the next hop (for example, the minimum index # n + k of the PRB or RE) based on the addition result of the index of the frequency resource of the previous hop (for example, the minimum index # n of the PRB or RE) and the frequency offset k (k is an integer).

As described above, in fig. 6A to 6D, the example in which the radio base station notifies the user terminal of the frequency offset information indicating the frequency offset k of the frequency resource for the previous hop has been described, but the frequency offset k is not limited to this. Fig. 7 is a diagram showing a modification example of the frequency offset in the case where the inter-slot hopping according to the first aspect is applied. In fig. 7A and 7B, a modification of the frequency offset k is shown as an example of the pattern of inter-slot frequency hopping in fig. 6A, but the present invention can also be applied to fig. 6B to 6D.

In fig. 7A, the radio base station notifies the user terminal of a frequency indicating that the ith (in fig. 7A, i is 2 to 4) hop-by-reference frequency is used as a referenceFrequency offset k of index # m of rate resource (reference frequency resource) _i Frequency offset information of (1). The information indicating the index # m may be notified (set) to the user terminal by higher layer signaling. In fig. 7A, the user terminal may also be based on the index # m of the reference frequency resource and the frequency offset k of the ith hop _i (k _i Integer), an index # m + k of a frequency resource deciding the ith hop _i (e.g., the smallest PRB index or RE index).

In fig. 7B, the radio base station notifies the user terminal of a frequency offset k indicating the i (i is 2 to 4 in fig. 7B) th hop from the index # l (e.g., PRB or RE index) of one end (edge) of the access BW (here, BWP) of the user terminal _i Frequency offset information of (a). The index # l may be an index (e.g., PRB index or RE index) of the end of the access BW on the opposite side of the frequency resource of the first hop.

In FIG. 7B, the user terminal may also be based on index # l and frequency offset k of the end accessing BWP _i (k _i Integer), an index # l + k of a frequency resource deciding the ith hop _i (e.g., the smallest PRB index or RE index).

Fig. 8 is a diagram showing an example of multiplexing of a plurality of user terminals when the inter-slot frequency hopping according to the 1 st aspect is applied. Fig. 8A shows a case where the frequency resource of the first hop of the user terminal #2 is equal to the frequency resource of the second hop of the user terminal # 1. In fig. 8A, the i-th (i is 2 to 4 in fig. 8A) hopping frequency resource of each of the user terminals #1 and #2 is determined based on the same frequency offset k as in fig. 6A and the index of the i-1-th frequency resource.

In fig. 8A, the frequency resource of the 4th hop of the user terminal #2 is smaller than one end of the BWP, and thus the frequency resource of the fourth hop is decided to be the same as the frequency resource of the first hop of the user terminal # 1. The same applies to fig. 8D.

As described above, when the index of the ith hop frequency resource is not included in the access BW (e.g., BWP) set for the user terminal, the ith frequency resource may be determined based on the index and the remaining resource units (e.g., the number of PRBs or the number of REs) in the BWP.

In the first aspect, when applying inter-slot hopping to the PUCCH/PUSCH, frequency resource information (for example, information indicating the frequency offset k shown in fig. 6A to 6D, 7A, or 7B) is notified from the radio base station to the user terminal, and therefore the user terminal can appropriately control the pattern of inter-slot hopping based on the frequency resource information.

(second mode)

In the second aspect, a difference from the first aspect is that, when applying inter-slot frequency hopping to a PUCCH/PUSCH spanning multiple slots, information (frequency resource information) on a frequency resource to which the PUCCH/PUSCH is mapped is not explicitly notified from a network (e.g., a radio base station). That is, in the second scheme, the user terminal determines the frequency resource to which the PUCCH/PUSCH is mapped, based on implicit confidence.

Specifically, the user terminal may determine the frequency resource to which the PUCCH/PUSCH to which the inter-slot frequency hopping is applied is mapped, based on information (intra-slot FH information) on the frequency resource of the PUCCH/PUSCH to which the intra-slot frequency hopping is applied.

Here, the intra-slot FH information may include information indicating an index (e.g., an index of a PRB and/or a Resource Element (RE) (PRB/RE)) of a specific frequency Resource (e.g., a first hopping (starting) frequency Resource) of the PUCCH/PUSCH to which intra-slot frequency hopping is applied, and information on other frequency resources (e.g., frequency resources after the second hopping). The information on the other frequency resource may be, for example, information indicating a predetermined frequency offset (frequency offset information) or information indicating an index of the other frequency resource.

The user terminal may determine the frequency resource of the PUCCH/PUSCH to which the inter-slot frequency hopping is applied, based on the frequency resource indicated by the intra-slot FH information. For example, the user terminal may apply the intra-slot hopping pattern indicated by the intra-slot FH information to the inter-slot hopping as it is. Alternatively, the intra-slot hopping pattern indicated by the intra-slot FH information may be multiplied by m (m is a positive integer) and applied to inter-slot hopping.

The intra-slot FH information may include information on the time resource of the PUCCH/PUSCH to which intra-slot frequency hopping is applied. The user terminal may determine the time resource of the PUCCH/PUSCH to which the inter-slot frequency hopping is applied, based on the time resource indicated by the intra-slot FH information.

Fig. 9 is a diagram illustrating an example of determination of frequency resources of PUCCH/PUSCH to which inter-slot frequency hopping is applied according to the second embodiment. In addition, although the case of using the frequency offset k from the frequency resource of the previous hop is described in fig. 9A to 9C, the present invention can be applied to the case of using the frequency offset k (fig. 7A) from the reference frequency resource or the frequency offset k (fig. 7B) from the access BW (e.g., BWP) of the user terminal as appropriate.

In fig. 9A, in intra-slot hopping, intra-slot FH information of an index # n indicating a frequency resource of the first hop and/or a frequency offset k is notified to the user terminal.

In fig. 9B, the intra-slot hopping pattern shown in fig. 9A may be applied to inter-slot hopping based on intra-slot FH information. In fig. 9B, the number of hopping slots (hopping timing, hopping boundary) M may be determined based on the number of slots to which the PUCCH/PUSCH is allocated, may be set by higher layer signaling, or may be determined in advance.

In fig. 9C, m (m is a positive integer) times the pattern of intra-slot frequency hopping in fig. 9A may be applied to inter-slot frequency hopping based on intra-slot FH information. Here, m may be specified by higher layer signaling and/or physical layer signaling (e.g., DCI), or may be derived by the user terminal itself according to a predetermined rule. For example, m may be determined based on the user terminal group and/or the Type of the user terminal (e.g., eMBB (enhanced Mobile broadband Band)), eMTC (enhanced Machine Type Communication), URLLC (Ultra Reliable and Low Latency Communication), or the like).

Further, although the radio base station notifies the user terminal of the intra-slot FH information, the intra-slot hopping pattern (for example, at least one of the frequency resource, the frequency offset, the time resource, and the hopping timing) may be derived based on at least one of the access BW (ue BWP), the cell bandwidth (cell BW), the UL BWP, and the DL BWP of the user terminal.

In addition, although the frequency resource of the PUCCH/PUSCH to which the inter-slot frequency hopping is applied is determined based on the intra-slot FH information in fig. 9B and 9C, the time resource of the PUCCH/PUSCH (for example, the number of symbols per slot or the like) may be controlled in addition to the frequency resource.

Further, even when intra-slot frequency hopping is applied to PUCCH/PUSCH spanning multiple slots, the application of intra-slot frequency hopping to a certain slot may be controlled based on the number of symbols (for example, the number of UL symbols) that can be utilized in the slot. For example, when the number of usable symbols in a certain time slot is smaller than a predetermined threshold value X, the application of frequency hopping in the time slot may be turned off. Further, X may be 7 or 4, for example.

In the second aspect, when applying inter-slot hopping to the PUCCH/PUSCH, the user terminal can appropriately control the pattern of inter-frequency hopping without being notified of the frequency resource information described in the first aspect from the radio base station, and thus overhead can be reduced.

(third mode)

In the third aspect, control of the timing (hopping boundary) of hopping frequency resources when inter-slot frequency hopping is applied to PUCCH/PUSCH spanning multiple slots is described.

< first decision >

The hop boundary in inter-slot hopping may also be determined based on the number of slots that satisfy a prescribed condition. The predetermined condition may be, for example, a slot in which the number of symbols in which PUCCH/PUSCH can be transmitted is equal to or greater than a predetermined threshold (or exceeds a predetermined threshold).

The number of symbols within a slot that can transmit PUCCH/PUSCH (e.g., the number of UL symbols) may also be specified by higher layer signaling and/or physical layer signaling. The number of symbols may also be specified by Slot Format Information (SFI), for example.

In addition, the number of allocated slots of the PUCCH/PUSCH may also be specified by higher layer signaling and/or physical layer signaling.

Fig. 10 shows a first example of the decision of the hop boundary of the inter-slot frequency hopping according to the third mode. In fig. 10A, it is assumed that slot #1 is a slot that does not satisfy the predetermined condition, and the other slots satisfy the predetermined condition.

As shown in fig. 10A and 10B, the user terminal may count slot #1 that does not satisfy the above-described predetermined condition as a PUCCH/PUSCH transmission slot. In this case, the user terminal may determine the frequency resource to which the PUCCH/PUSCH is mapped in the inter-slot hopping without considering the slot # 1.

For example, in fig. 10A, the next slot #2 of the slot #1 becomes a frequency resource of the second hop. In fig. 10B, since the hopping slot number M is set to 2, the frequency resource of slot #2 is the same as slot #0, and slot #1 is not counted.

In the first determination method, the mode of inter-slot frequency hopping is determined in consideration of only slots in which PUCCH/PUSCH can be transmitted, and therefore the frequency diversity effect of PUCCH/PUSCH can be obtained more effectively.

< second decision method >

Alternatively, the hop boundary in inter-slot hopping may not be determined based on the number of slots satisfying the predetermined condition. The second decision focuses on the differences from the first decision.

Fig. 11 is a diagram showing a second example of determination of a hop boundary of inter-slot frequency hopping according to the third mode. As shown in fig. 11A and 11B, the user terminal may count slot #1 that does not satisfy the predetermined condition as a PUCCH/PUSCH transmission slot. In this case, the user terminal may determine the frequency resource to which the PUCCH/PUSCH is mapped in the inter-slot hopping in consideration of slot # 1.

For example, in fig. 11A, since the next slot #1 of the slot #0 becomes the frequency resource of the second hop, the frequency resource of the slot #2 becomes a frequency offset 2 times the frequency resource of the slot # 1. In fig. 11B, since the hopping slot number M is set to 2, the frequency resource of slot #2 is a frequency resource which hops by counting slot # 1.

In the second determination method, the inter-slot hopping pattern is determined regardless of whether or not the slot is a slot in which the PUCCH/PUSCH can be transmitted, and therefore the determination of the pattern can be simplified.

In the third aspect described above, when inter-slot hopping is applied to the PUCCH/PUSCH, the hopping boundary can be appropriately controlled.

(fourth mode)

In the fourth aspect, details of signaling when inter-slot hopping is applied to the PUCCH will be described.

A plurality of sets (PUCCH resource set, parameter set) each including one or more parameters related to a PUCCH resource (PUCCH resource) are set (notified from the radio base station) in advance by higher layer signaling for the user terminal. One of the plurality of PUCCH resource sets is specified by a predetermined field in Downlink Control Information (DCI). The user terminal controls transmission of the PUCCH based on the PUCCH resource set indicated by the prescribed field value in the DCI.

When inter-slot frequency hopping is applied to the PUCCH, frequency resource information described in the first aspect and the like may be included in each PUCCH resource set by higher layer signaling.

Fig. 12 is a diagram illustrating an example of a PUCCH resource set according to the fourth aspect. As shown in fig. 12A, each value of the prescribed field of DCI indicates a PUCCH resource set. For example, in fig. 12A, the prescribed field values "00", "01", "10", and "11" respectively represent PUCCH resource sets #0, #1, #2, and # 3.

As shown in fig. 12B, each PUCCH resource set may include at least one of the following parameters.

Information indicating the starting symbol of the PUCCH

Information indicating the number of symbols of the PUCCH in the slot

Information (e.g., index of starting PRB) for identifying frequency resource (e.g., starting RPB) of first hop of PUCCH

Information indicating the number of resource elements (e.g., the number of PRBs) constituting a frequency resource of the PUCCH

Information indicating the absence (on or off) of application (enabling) hopping

Information on frequency resources after the second hop (for example, information indicating frequency offsets shown in fig. 4A to 4C or information indicating indexes of frequency resources after the second hop) when frequency hopping is applied

Information indicating which of intra-slot hopping and inter-slot hopping is applied to PUSCH spanning a plurality of slots (information indicating a pattern of hopping)

In addition, at least one parameter shown in fig. 12B may be set (configure) semi-statically by higher layer signaling instead of being dynamically specified as a PUCCH resource set.

Note that the PUCCH format may not be explicitly notified to the UE, and the user terminal (UE) may estimate the PUCCH format from the notified PUCCH resource. For example, as long as the number of symbols of the notified PUCCH is less than 4, the UE can estimate the PUCCH format to which the short PUCCH is notified. In fig. 12A, each PUCCH resource set may represent a PUCCH resource of one PUCCH format. In addition, PUCCH formats may be different for each PUCCH resource set. In addition, at least one parameter of fig. 12B may be specified per PUCCH resource set and per PUCCH format. For example, the presence or absence of hopping to which each PUCCH resource set is applied may be specified for PUCCH formats 0 to 4.

Note that the prescribed field value in the DCI shown in fig. 12A may indicate a PUCCH resource set for each PUCCH format. For example, the prescribed field value "00" may indicate PUCCH resource set #0 in PUCCH format 0 and PUCCH resource set #4 in PUCCH format 1. In this way, the same prescribed field value may also represent the same and/or different PUCCH resource sets among PUCCH formats.

According to the fourth aspect, when applying inter-slot hopping to PUCCH, since the user terminal is assigned a PUCCH resource set including frequency resource information (for example, information indicating frequency offset k shown in fig. 6A to 6D, 7A, or 7B) for PUCCH, the user terminal can appropriately control the inter-slot hopping pattern of PUCCH based on the frequency resource information.

(fifth mode)

In the fifth aspect, signaling in the case where inter-slot frequency hopping is applied to the PUSCH will be described.

The DCI used to schedule the PUSCH in one or more slots may also contain information (time resource information) indicating the symbols and/or slots used for transmission of the PUSCH within that slot. The time resource information may be, for example, information indicating the index of the first symbol to which the PUSCH is allocated in the slot (starting symbol index) and/or the number of symbols (time length or period) (for example, an index associated with the starting symbol index and/or the number of symbols in a predetermined table), or information indicating the number of slots.

In addition, one of a plurality of PUSCH structures (configurations) (PUSCH structures) may be set for the user terminal by higher layer signaling (for example, RRC signaling). The plurality of PUSCH structures include a default PUSCH structure (also referred to as structure 1, default structure, or the like) until the PUSCH structure is set by higher layer signaling.

Allocation (allocation) of frequency resources to the PUSCH is performed in a predetermined resource unit (e.g., PRB or a group including one or more PRBs (resource block group (RBG)). The size of the RBG (RBG size, number of PRBs in the RBG) may be determined for each PUSCH configuration according to the number of PRBs in the access BW (e.g., BWP) of the user terminal.

For example, by X at access BW ₀ Each to X ₁ In the case of the single PRB configuration, the RBG size 1 is applied in the case of PUSCH configuration #1, and the RBG size is applied in the case of PUSCH configuration # 2. Furthermore, there is a defined number X of BW in the access BW ₁ +1 to X ₂ In the case of the single PRB configuration, the RBG size 3 can be used for the PUSCH configuration #1, and the RBG size 4 is applied for the PUSCH configuration # 2.

The RBG size corresponding to access BW per PUSCH structure as such may also be decided by a table. In this table, the RBG size is determined for each stage of the number of PRBs accessing the BW. The number of stages of the number of PRBs is, for example, 4 to 6, and the table may include 4 to 6 records. The table may be common between the PUSCH and the PUCCH, or may be specific to each. The RBG size may be fixed regardless of the PUSCH period (number of symbols).

When inter-slot frequency hopping is applied to the PUSCH configured as described above, the frequency resource information described in the first embodiment and the like may be specified by DCI. Further, whether frequency hopping is applied or not may also be specified by the DCI.

Here, the DCI may be DCI arranged in a search space (common search space) common to one or more user terminals (also referred to as common DCI, fallback DCI, or the like), or DCI arranged in a search space specific to a user terminal (also referred to as dedicated DCI, non-fallback DCI, or the like).

The fallback DCI is DCI in which contents are not set by user terminal-specific higher layer signaling (e.g., RRC signaling). The non-fallback DCI is DCI capable of setting contents through user terminal-specific higher layer signaling (e.g., RRC signaling). The non-fallback DCI may also be used for scheduling of PUSCH, and may also be referred to as UL grant or the like.

Fig. 13 is a diagram illustrating an example of DCI according to the fifth embodiment. As shown in fig. 13, DCI (fallback DCI and/or non-fallback DCI) may also indicate at least one of the following information.

Information indicating the starting symbol of PUSCH

Information indicating the number of symbols of PUSCH in a slot

Assignment information (c) of frequency resources to PUSCH

Information (a) indicating the absence (on or off) of application (enabling) hopping

Information (b) on frequency resources after the second hop when frequency hopping is applied

(for example, information indicating the frequency offset (also referred to as a gap, a bandwidth, or the like) shown in FIGS. 6A to 6D, 7A, or 7B, or information indicating the index of each frequency resource after the second hop (for example, a PRB index or a RE index))

Information (d) (information indicating a pattern of frequency hopping) indicating which of intra-slot frequency hopping and inter-slot frequency hopping is applied to the PUSCH spanning a plurality of slots

Specifically, each piece of Information shown in fig. 13 may be represented by each field (also referred to as a parameter, an Information item (IE: Information Element), or the like) in the DCI. Alternatively, at least two of these may also be represented by a single field (joint field) within the DCI.

For example, information (a) indicating the presence or absence of application of frequency hopping may be indicated by a single field in DCI, and information (b) on the frequency resources after the second hop and allocation information (c) on the frequency resources for PUSCH may be indicated by another single field (for example, a resource allocation field) in DCI.

Alternatively, the information (a) indicating the presence or absence of application of frequency hopping, the information (b) on the frequency resources after the second hop, and the allocation information (c) on the frequency resources of the PUSCH may all be indicated by a single field (for example, a resource allocation field) in the DCI.

The information (d) indicating which of intra-slot hopping and inter-slot hopping is applied to the PUSCH spanning a plurality of slots may be indicated by the same joint field as the information related to the time resource of the PUSCH (for example, information indicating the start symbol and/or information indicating the number of symbols in the slot), or may be indicated by a different field in the DCI.

Fig. 14 is a diagram illustrating an example of an association field in DCI according to the fifth embodiment. Fig. 14A shows information (a) indicating whether or not frequency hopping is applied, information (b) on the frequency resource of the second hop, and allocation information (c) on the frequency resource of the PUSCH, by an X-bit joint field (for example, a resource allocation field) in DCI.

For example, in fig. 14A, ceil [ Y RBs (Y RBs +1) ] bits indicate allocation information (a) (for example, the number of PRBs Y) of frequency resources for PUSCH, and Z bits indicate information (b) on frequency resources after the second hopping and allocation information (c) of frequency resources for PUSCH.

The number of bits X of the association field may be a fixed value, a value set by higher layer signaling, or a value derived based on the access BW (e.g., UL BWP) of the user terminal. For example, when X is fixed, X may be 15 if the DCI is a fallback DCI, or may be 25 if the DCI is a non-fallback DCI.

The number of bits Z indicating the information (b) on the frequency resources after the second hop and the allocation information (c) on the frequency resources of the PUSCH may be a fixed value or a value derived based on the bandwidth S of the access BW (e.g., UL BWP) of the user terminal or the total bandwidth S to be subjected to frequency hopping. For example, when the bandwidth S of the access BW or the total bandwidth S subjected to frequency hopping is equal to or less than a predetermined threshold, Z may be 1 bit, and when the bandwidth S is greater than the predetermined threshold, Z may be 2 bits.

Fig. 14B shows information indicated by each bit value when Z is 1. For example, a bit value "0" indicates that no frequency hopping is applied, and a bit value "1" indicates a frequency offset "1/2 × S" in the case where frequency hopping is applied.

Fig. 14C shows information indicated by each bit value when Z is 2. For example, a bit value of "00" indicates that frequency hopping is not applied, and bit values of "01", "10", and "11" indicate frequency offsets "1/2 × S", "+ 1/4 × S", and "— 1/4 × S", respectively, in the case where frequency hopping is applied.

The user terminal may also control inter-slot frequency hopping of the PUSCH based on the allocation information (a) for the frequency resources of the PUSCH represented by ceil [ log (Y RBs [ (Y RBs +1)) ] bits and the frequency offset represented by the bit value of the Z bit.

In addition, at least one of user data, higher layer control information, and message 3 may be transmitted on the PUSCH to which the above inter-slot frequency hopping is applied. The message 3 is higher layer control information transmitted from the user terminal in response to a random access response (RAR, message 2) from the radio base station in the random access procedure.

According to the fifth aspect, when applying inter-slot hopping to the PUSCH, the radio base station transmits DCI including frequency resource information indicating the PUSCH (for example, information indicating the frequency offset shown in fig. 6A to 6D, 7A, or 7B), and therefore the user terminal can appropriately control the mode of inter-slot hopping of the PUSCH based on the frequency resource information.

(Wireless communication System)

The configuration of the radio communication system according to the present embodiment will be described below. In this wireless communication system, the wireless communication method according to each of the above-described modes is applied. The wireless communication methods according to the above-described embodiments may be applied individually or in combination of at least two methods.

Fig. 15 is a diagram showing an example of a schematic configuration of a radio communication system according to the present embodiment. In the wireless communication system 1, Carrier Aggregation (CA) and/or Dual Connectivity (DC) that integrates a plurality of basic frequency blocks (component carriers) that are 1 unit in the system bandwidth (e.g., 20MHz) of the LTE system can be applied. The wireless communication system 1 may be referred to as SUPER3G, LTE-a (LTE-Advanced), IMT-Advanced, 4G, 5G, FRA (Future Radio Access), NR (New Radio Access Technology), and the like.

The radio communication system 1 shown in fig. 15 includes a radio base station 11 forming a macrocell C1, and radio base stations 12a to 12C arranged within the macrocell C1 and forming a small cell C2 narrower than the macrocell C1. Further, the user terminal 20 is arranged in the macro cell C1 and each small cell C2. It is also possible to adopt a structure in which different parameter sets (Numerology) are applied between cells and/or within a cell.

Here, the parameter set refers to communication parameters in the frequency direction and/or the time direction (for example, at least one of an interval of subcarriers (subcarrier interval), a bandwidth, a symbol length, a time length of CP (CP length), a subframe length, a time length of TTI (TTI length), the number of symbols per TTI, a radio frame structure, filtering processing, window processing, and the like). The wireless communication system 1 may support subcarrier intervals of, for example, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, and the like.

User terminal 20 can be connected to both radio base station 11 and radio base station 12. It is assumed that the user terminal 20 simultaneously uses the macro cell C1 and the small cell C2 using different frequencies through CA or DC. Further, the user terminal 20 can apply CA or DC with a plurality of cells (CCs) (e.g., 2 or more CCs). In addition, the user terminal can utilize the licensed band CC and the unlicensed band CC as a plurality of cells.

The user terminal 20 can perform communication in each cell by using Time Division Duplex (TDD) or Frequency Division Duplex (FDD). The TDD cell, the FDD cell may be respectively referred to as a TDD carrier (frame structure type 2), an FDD carrier (frame structure type 1), and the like.

In addition, a single parameter set may be applied to each cell (carrier), or a plurality of different parameter sets may be applied.

The user terminal 20 and the radio base station 11 can communicate with each other using a carrier having a narrow bandwidth (referred to as an existing carrier, legacy carrier, or the like) in a relatively low frequency band (e.g., 2 GHz). On the other hand, a carrier having a wide bandwidth may be used between the user terminal 20 and the radio base station 12 in a relatively high frequency band (for example, 3.5GHz, 5GHz, 30 to 70GHz, etc.), or the same carrier as that used in the radio base station 11 may be used. The configuration of the frequency band used by each radio base station is not limited to this.

The Radio base station 11 and the Radio base station 12 (or 2 Radio base stations 12) can be configured to perform wired connection (for example, an optical fiber conforming to Common Public Radio Interface (CPRI) or an X2 Interface) or wireless connection.

The radio base station 11 and each radio base station 12 are connected to the upper station apparatus 30, and are connected to the core network 40 via the upper station apparatus 30. The upper station apparatus 30 includes, for example, an access gateway apparatus, a Radio Network Controller (RNC), a Mobility Management Entity (MME), and the like, but is not limited thereto. Each radio base station 12 can be connected to the upper station apparatus 30 via the radio base station 11.

The radio base station 11 is a radio base station having a relatively wide coverage area, and may be referred to as a macro base station, a sink node, an enb (enodeb), a gnb (gnnodeb), a transmission/reception point (TRP), or the like. The Radio base station 12 is a Radio base station having a local coverage area, and may also be referred to as a small base station, a micro base station, a pico base station, a femto base station, an HeNB (Home eNodeB), an RRH (Remote Radio Head), an eNB, a gNB, a transmission/reception point, or the like. Hereinafter, the radio base stations 11 and 12 are collectively referred to as the radio base station 10 without distinguishing them.

Each user terminal 20 is a terminal supporting various communication schemes such as LTE, LTE-a, and 5G, NR, and may include not only a mobile communication terminal but also a fixed communication terminal. Further, the user terminal 20 is capable of inter-terminal communication with other user terminals 20 (D2D).

In the wireless communication system 1, as radio access schemes, OFDMA (orthogonal frequency division multiple access) is applied to the Downlink (DL), and SC-FDMA (single carrier-frequency division multiple access) is applied to the Uplink (UL). OFDMA is a multicarrier transmission scheme in which a frequency band is divided into a plurality of narrow frequency bands (subcarriers) and data is mapped to each subcarrier to perform communication. SC-FDMA is a single carrier transmission scheme in which the system bandwidth is divided into 1 or more contiguous resource blocks for each terminal, and a plurality of terminals use different bands to reduce interference between terminals. The uplink and downlink radio access schemes are not limited to the combination of these, and OFDMA may be used in the UL.

Further, in the wireless communication system 1, a multi-carrier waveform (for example, OFDM waveform) may be used, and a single-carrier waveform (for example, DFT-s-OFDM waveform) may be used.

In the wireless communication system 1, DL Shared channels (also referred to as Physical Downlink Shared Channels (PDSCH), Downlink data channels, and the like), Broadcast channels (PBCH), L1/L2 control channels, and the like, which are Shared by the user terminals 20, are used as Downlink (DL) channels. User data, higher layer control Information, SIB (System Information Block), and the like are transmitted through the PDSCH. Also, MIB (Master Information Block) is transmitted through PBCH.

The L1/L2 Control channels include a Downlink Control Channel (PDCCH (Physical Downlink Control Channel), an EPDCCH (Enhanced Physical Downlink Control Channel)), a PCFICH (Physical Control Format Indicator Channel), a PHICH (Physical Hybrid-ARQ Indicator Channel), and the like. Downlink Control Information (DCI) including scheduling Information of the PDSCH and the PUSCH is transmitted through the PDCCH. The number of OFDM symbols for PDCCH is transmitted through PCFICH. EPDCCH is frequency division multiplexed with PDSCH and is used for transmission of DCI and the like as in PDCCH. Retransmission control information (ACK/NACK) for HARQ of the PUSCH can be transmitted through at least one of PHICH, PDCCH, EPDCCH.

In the radio communication system 1, as Uplink (UL) channels, Uplink Shared channels (also referred to as Physical Uplink Shared Channels (PUSCH), Uplink data channels, and the like), Uplink Control channels (Physical Uplink Control channels (PUCCH)), Random Access channels (PRACH), and the like) Shared by the user terminals 20 are used. User data and high-level control information are transmitted through a PUSCH. Uplink Control Information (Uplink Control Information) including at least one of retransmission Control Information (a/N) of a Downlink (DL) signal, Channel State Information (CSI), and the like is transmitted through the PUSCH or PUCCH. A random access preamble for establishing a connection with a cell can be transmitted through the PRACH.

< radio base station >

Fig. 16 is a diagram showing an example of the overall configuration of the radio base station according to the present embodiment. The radio base station 10 includes: a plurality of transmission/reception antennas 101, an amplifier unit 102, a transmission/reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106. Each of the transmission/reception antennas 101, the amplifier unit 102, and the transmission/reception unit 103 may be configured to include 1 or more.

User data transmitted from the radio base station 10 to the user terminal 20 in the downlink is input from the upper station apparatus 30 to the baseband signal processing unit 104 via the transmission line interface 106.

Baseband signal processing section 104 performs transmission processing such as PDCP (Packet Data Convergence Protocol) layer processing, division/association of user Data, RLC (Radio Link Control) layer transmission processing such as RLC retransmission Control, MAC (Medium Access Control) retransmission Control (for example, HARQ (hybrid automatic repeat request) transmission processing), scheduling, transport format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, and precoding processing on user Data, and forwards the user Data to transmitting/receiving section 103. Also, the downlink control signal is subjected to transmission processing such as channel coding and inverse fast fourier transform, and is forwarded to transmitting/receiving section 103.

Transmission/reception section 103 converts the baseband signal, which is output from baseband signal processing section 104 after being precoded for each antenna, into a radio frequency band and transmits the radio frequency band. The radio frequency signal subjected to frequency conversion in transmission/reception section 103 is amplified by amplifier section 102 and transmitted from transmission/reception antenna 101.

The present invention can be configured by a transmitter/receiver, a transmission/reception circuit, or a transmission/reception device described based on common knowledge in the technical field related to the present invention. The transmission/reception unit 103 may be an integrated transmission/reception unit, or may be composed of a transmission unit and a reception unit.

On the other hand, as for an Uplink (UL) signal, a radio frequency signal received by transmission/reception antenna 101 is amplified by amplifier section 102. Transmission/reception section 103 receives the UL signal amplified by amplifier section 102. Transmission/reception section 103 frequency-converts the received signal into a baseband signal, and outputs the baseband signal to baseband signal processing section 104.

The baseband signal processing section 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, error correction decoding, reception processing for MAC retransmission control, and reception processing for the RLC layer and PDCP layer on the UL data included in the input UL signal, and transfers the UL data to the upper station apparatus 30 via the transmission path interface 106. Call processing section 105 performs call processing such as setting or releasing a communication channel, state management of radio base station 10, and management of radio resources.

The transmission line interface 106 transmits and receives signals to and from the upper station apparatus 30 via a predetermined interface. Further, the transmission path Interface 106 may transmit and receive (backhaul signaling) signals with the neighboring Radio base stations 10 via an inter-base station Interface (e.g., an optical fiber in compliance with Common Public Radio Interface, X2 Interface).

Furthermore, transmission/reception section 103 transmits a Downlink (DL) signal (including at least one of a DL data signal, a DL control signal, and a DL reference signal) to user terminal 20, and receives an Uplink (UL) signal (including at least one of a UL data signal, a UL control signal, and a UL reference signal) from user terminal 20.

Further, the transmission/reception unit 103 receives an uplink data channel (e.g., PUSCH) and/or an uplink control channel (e.g., short PUCCH and/or long PUCCH).

Transmission/reception section 103 also transmits control information by higher layer signaling (higher layer control information) and downlink control information by physical layer signaling (DCI). Specifically, transmission/reception section 103 transmits frequency resource information (first embodiment). For example, transmission/reception section 103 may transmit a plurality of parameter sets (PUCCH resource sets) each including the above-described frequency resource information and transmit downlink control information indicating one of the plurality of parameter sets by higher layer signaling (fourth aspect). Furthermore, transmitting/receiving section 103 may transmit downlink control information including the frequency resource information (fifth aspect).

Fig. 17 is a diagram showing an example of a functional configuration of the radio base station according to the present embodiment. Fig. 17 mainly shows functional blocks of characteristic parts in the present embodiment, and the radio base station 10 is assumed to further include other functional blocks necessary for radio communication. As shown in fig. 17, the baseband signal processing section 104 includes a control section 301, a transmission signal generation section 302, a mapping section 303, a reception signal processing section 304, and a measurement section 305.

Control section 301 performs overall control of radio base station 10. Control section 301 controls, for example, generation of a DL signal by transmission signal generation section 302, mapping of a DL signal by mapping section 303, reception processing (for example, demodulation or the like) of an UL signal by reception signal processing section 304, and measurement by measurement section 305.

Specifically, the control unit 301 performs scheduling of the user terminal 20. Specifically, control section 301 may also perform scheduling and/or retransmission control of a downlink data channel and/or an uplink data channel based on UCI (e.g., CSI and/or BI) from user terminal 20.

Control section 301 may control the configuration (format) of an uplink control channel (for example, long PUCCH and/or short PUCCH) so as to transmit control information on the uplink control channel.

Furthermore, control unit 301 may also control intra-slot frequency hopping and/or inter-slot frequency hopping of an uplink control channel (e.g., long PUCCH and/or short PUCCH) spanning one or more slots. Specifically, control section 301 may control generation and/or transmission of the frequency resource information.

Furthermore, control unit 301 may also control intra-slot and/or inter-slot frequency hopping of an uplink data channel (e.g., PUSCH) that spans one or more slots. Specifically, control section 301 may control generation and/or transmission of the frequency resource information.

Furthermore, control unit 301 may also control generation and/or transmission of PUCCH resource sets.

Control section 301 may control received signal processing section 304 so as to perform a reception process of UCI from user terminal 20 based on the format of the uplink control channel.

The control unit 301 can be configured by a controller, a control circuit, or a control device described based on common knowledge in the technical field related to the present invention.

Transmission signal generating section 302 generates a DL signal (including a DL data signal, a DL control signal, and a DL reference signal) based on an instruction from control section 301, and outputs the DL signal to mapping section 303.

Transmission signal generating section 302 can be a signal generator, a signal generating circuit, or a signal generating device, which have been described based on common knowledge in the technical field of the present invention.

Mapping section 303 maps the DL signal generated in transmission signal generating section 302 to a predetermined radio resource based on an instruction from control section 301, and outputs the result to transmitting/receiving section 103. The mapping unit 303 can be a mapper, a mapping circuit, or a mapping device described based on common knowledge in the technical field related to the present invention.

Received signal processing section 304 performs reception processing (e.g., demapping, demodulation, decoding, and the like) on the UL signal (including, for example, the UL data signal, the UL control signal, and the UL reference signal) transmitted from user terminal 20. Specifically, the received signal processing unit 304 may output the received signal or the reception-processed signal to the measurement unit 305. Further, received signal processing section 304 performs UCI reception processing based on the uplink control channel configuration instructed from control section 301.

The measurement unit 305 performs measurements related to the received signal. The measurement unit 305 can be configured by a measurement instrument, a measurement circuit, or a measurement device, which are described based on common knowledge in the technical field related to the present invention.

The measurement unit 305 may, for example, measure the channel Quality of the UL based on the Received Power of the UL Reference Signal (e.g., Reference Signal Received Power (RSRP)) and/or the Received Quality (e.g., Reference Signal Received Quality (RSRQ)). The measurement result may be output to the control unit 301.

< user terminal >

Fig. 18 is a diagram showing an example of the overall configuration of the user terminal according to the present embodiment. The user terminal 20 includes a plurality of transmission/reception antennas 201 for MIMO transmission, an amplifier unit 202, a transmission/reception unit 203, a baseband signal processing unit 204, and an application unit 205.

Radio frequency signals received by the plurality of transmitting/receiving antennas 201 are amplified in amplifier units 202, respectively. Each transmitting/receiving section 203 receives the DL signal amplified by amplifier section 202. Transmission/reception section 203 frequency-converts the received signal into a baseband signal, and outputs the baseband signal to baseband signal processing section 204.

The baseband signal processing section 204 performs FFT processing, error correction decoding, retransmission control reception processing, and the like on the input baseband signal. The DL data is forwarded to the application unit 205. The application unit 205 performs processing and the like relating to a layer higher than the physical layer or the MAC layer. In addition, the broadcast information is also forwarded to the application unit 205.

On the other hand, Uplink (UL) data is input from the application section 205 to the baseband signal processing section 204. The baseband signal processing section 204 performs transmission processing for retransmission control (for example, transmission processing for HARQ), channel coding, rate matching, puncturing, Discrete Fourier Transform (DFT) processing, IFFT processing, and the like, and transfers the result to each transmitting/receiving section 203. The UCI is also subjected to at least one of channel coding, rate matching, puncturing, DFT processing, and IFFT processing, and is transferred to each transmitting/receiving section 203.

Transmission/reception section 203 converts the baseband signal output from baseband signal processing section 204 into a radio frequency band and transmits the radio frequency band. The radio frequency signal frequency-converted by transmission/reception section 203 is amplified by amplifier section 202 and transmitted from transmission/reception antenna 201.

Furthermore, transmission/reception section 203 receives a Downlink (DL) signal (including a DL data signal, a DL control signal, and a DL reference signal) of the parameter set for user terminal 20, and transmits an UL signal (including a UL data signal, a UL control signal, and a UL reference signal) of the parameter set.

Further, the transmission/reception unit 203 transmits an uplink data channel (e.g., PUSCH) and/or an uplink control channel (e.g., short PUCCH and/or long PUCCH).

Transmission/reception section 203 receives control information by higher layer signaling (higher layer control information) and downlink control information by physical layer signaling (DCI). Specifically, the transmission/reception section 203 receives the frequency resource information (first scheme). Furthermore, transmission/reception section 203 may receive a plurality of parameter sets (PUCCH resource sets) each including the frequency resource information by higher layer signaling, and receive downlink control information indicating one of the plurality of parameter sets (fourth aspect). Further, transmission/reception section 203 may receive downlink control information including the frequency resource information (fifth aspect).

The transmitting/receiving unit 203 can be a transmitter/receiver, a transmitting/receiving circuit, or a transmitting/receiving device described based on common knowledge in the technical field related to the present invention. The transmission/reception unit 203 may be an integrated transmission/reception unit, or may be composed of a transmission unit and a reception unit.

Fig. 19 is a diagram showing an example of a functional configuration of the user terminal according to the present embodiment. Note that fig. 19 mainly shows the functional blocks of the characteristic portions in the present embodiment, and it is conceivable that the user terminal 20 further has other functional blocks necessary for wireless communication. As shown in fig. 19, baseband signal processing section 204 included in user terminal 20 includes control section 401, transmission signal generation section 402, mapping section 403, reception signal processing section 404, and measurement section 405.

The control unit 401 performs overall control of the user terminal 20. Control section 401 controls, for example, generation of an UL signal by transmission signal generation section 402, mapping of an UL signal by mapping section 403, reception processing of a DL signal by reception signal processing section 404, and measurement by measurement section 405.

Further, control section 401 controls the uplink control channel used when UCI is transmitted from user terminal 20, based on an explicit instruction from radio base station 10 or an implicit decision in user terminal 20.

Further, control section 401 may control the structure (format) of an uplink control channel (for example, long PUCCH and/or short PUCCH). Control section 401 may control the format of the uplink control channel based on control information from radio base station 10.

Further, control section 401 may also control transmission of an uplink control channel (e.g., long PUCCH and/or short PUCCH) spanning one or more slots. Specifically, control section 401 may control frequency hopping of the uplink control channel in each slot based on information (intra-slot FH information) on the frequency resource to which the uplink control channel is mapped.

Furthermore, control section 401 may control frequency hopping of the uplink control channel among a plurality of slots.

Specifically, control section 401 may control frequency hopping of the uplink control channel among a plurality of time slots (inter-slot frequency hopping) based on information (frequency resource information) on the frequency resource to which the uplink control channel is mapped (first scheme).

Furthermore, when receiving a plurality of parameter sets each including the frequency resource information by higher layer signaling, control section 401 may control frequency hopping of the uplink control channel among a plurality of slots based on one of the plurality of parameter sets specified by the downlink control information (fourth aspect).

Furthermore, control section 401 may control frequency hopping among a plurality of slots (inter-slot frequency hopping) of the uplink control channel based on information on frequency resources (intra-slot FH information) used when intra-slot frequency hopping (intra-slot frequency hopping) is applied (second scheme).

Here, the above information on the frequency resource (the frequency resource information and/or the intra-slot FH information) may include information indicating any one of a frequency offset with respect to a frequency resource of a previous hop, a frequency offset with respect to a frequency resource set by higher layer signaling, and a frequency offset with respect to an edge of a frequency band set to the user terminal.

When transmitting the uplink control channel over a plurality of slots, control section 401 may control inter-slot hopping of the uplink control channel based on information indicating which of hopping in each slot (intra-slot hopping) and hopping between a plurality of slots (inter-slot hopping) is applied.

Further, control section 401 may also control transmission of an uplink data channel (e.g., PUSCH) spanning one or more slots. Specifically, control section 401 may control frequency hopping of the uplink data channel in each slot based on information (intra-slot FH information) on the frequency resource to which the uplink data channel is mapped.

Furthermore, control section 401 may control frequency hopping of the uplink data channel among a plurality of slots.

Specifically, control section 401 may control frequency hopping of uplink data among a plurality of slots (inter-slot frequency hopping) based on information (frequency resource information) on a frequency resource to which an uplink data channel is mapped (first scheme).

Further, when receiving downlink control information including information on the frequency resource, control section 401 may control frequency hopping of an uplink data channel among a plurality of slots (inter-slot frequency hopping) based on the downlink control information (fifth aspect).

Furthermore, control section 401 may control the frequency hopping among a plurality of slots (inter-slot frequency hopping) of the uplink control channel based on information on frequency resources (intra-slot FH information) used when the frequency hopping within a slot (intra-slot frequency hopping) is applied (second method).

When transmitting the uplink data channel over a plurality of slots, control section 401 may control inter-slot hopping of the uplink data channel based on information indicating to which of hopping in each slot (intra-slot hopping) and hopping between a plurality of slots (inter-slot hopping) is applied.

Furthermore, control section 401 may determine PUCCH resources used in the PUCCH format based on higher layer signaling and/or downlink control information.

Control section 401 may control at least one of transmission signal generation section 402, mapping section 403, and transmission/reception section 203 so that UCI transmission processing is performed based on the PUCCH format.

The control unit 401 can be configured by a controller, a control circuit, or a control device described for common understanding in the technical field related to the present invention.

Transmission signal generating section 402 generates an UL signal (including an UL data signal, an UL control signal, an UL reference signal, and UCI) (e.g., coding, rate matching, puncturing, modulation, and the like) based on an instruction from control section 401, and outputs the generated signal to mapping section 403. Transmission signal generating section 402 can be a signal generator, a signal generating circuit, or a signal generating device, which have been described based on common knowledge in the technical field related to the present invention.

Mapping section 403 maps the UL signal generated in transmission signal generating section 402 to a radio resource based on an instruction from control section 401, and outputs the result to transmission/reception section 203. Mapping section 403 can be a mapper, a mapping circuit, or a mapping device, which are described based on common knowledge in the technical field related to the present invention.

The received signal processing unit 404 performs reception processing (e.g., demapping, demodulation, decoding, and the like) on the DL signal (DL data signal, scheduling information, DL control signal, DL reference signal). Received signal processing section 404 outputs information received from radio base station 10 to control section 401. Received signal processing section 404 outputs, for example, higher layer control information based on higher layer signaling, such as broadcast information, system information, and RRC signaling, physical layer control information (L1/L2 control information), and the like to control section 401.

The received signal processing section 404 can be constituted by a signal processor, a signal processing circuit, or a signal processing device, which have been described based on common knowledge in the technical field related to the present invention. The received signal processing section 404 can constitute a receiving section according to the present invention.

Measurement section 405 measures a channel state based on a reference signal (for example, CSI-RS) from radio base station 10, and outputs the measurement result to control section 401. In addition, the measurement of the channel state may be performed per CC.

The measurement unit 405 can be configured by a signal processor, a signal processing circuit, or a signal processing device, and a measurement instrument, a measurement circuit, or a measurement device, which are described based on common knowledge in the technical field related to the present invention.

< hardware Structure >

The block diagrams used in the description of the above embodiments represent blocks in functional units. These functional blocks (structural units) are implemented by any combination of hardware and/or software. The method of implementing each functional block is not particularly limited. That is, each functional block may be implemented by 1 apparatus which is physically and/or logically combined, or by a plurality of apparatuses which are directly and/or indirectly (for example, by wired and/or wireless) connected to two or more apparatuses which are physically and/or logically separated.

For example, the radio base station, the user terminal, and the like according to one embodiment of the present invention can function as a computer that performs processing of the radio communication method according to the present invention. Fig. 20 is a diagram showing an example of hardware configurations of the radio base station and the user terminal according to the present embodiment. The radio base station 10 and the user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following description, the term "device" may be replaced with a circuit, an apparatus, a unit, or the like. The hardware configurations of the radio base station 10 and the user terminal 20 may include 1 or more devices as shown in the figure, or may be configured without including some devices.

For example, only 1 processor 1001 is shown, but there may be multiple processors. The processing may be executed by 1 processor, or the processing may be executed by 1 or more processors simultaneously, sequentially, or by using another method. The processor 1001 may be implemented by 1 or more chips.

Each function of the radio base station 10 and the user terminal 20 is realized by, for example, reading predetermined software (program) into hardware such as the processor 1001 and the memory 1002, performing an operation by the processor 1001, and controlling communication via the communication device 1004 or controlling reading and/or writing of data in the memory 1002 and the storage 1003.

The processor 1001 controls the entire computer by operating an operating system, for example. The processor 1001 may be constituted by a Central Processing Unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the baseband signal processing unit 104(204), the call processing unit 105, and the like may be implemented by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, and the like from the storage 1003 and/or the communication device 1004 to the memory 1002, and executes various processes based on them. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks may be similarly realized.

The Memory 1002 is a computer-readable recording medium, and may be constituted by at least 1 of ROM (Read Only Memory), EPROM (erasable Programmable ROM), EEPROM (electrically EPROM), RAM (Random Access Memory), and other suitable storage media. The memory 1002 may also be referred to as a register, cache, main memory (primary storage), or the like. The memory 1002 can store an executable program (program code), a software module, and the like for implementing the wireless communication method according to one embodiment of the present invention.

The storage 1003 is a computer-readable recording medium, and may be configured of at least 1 of a flexible disk, a floppy (registered trademark) disk, an optical magnetic disk (e.g., a compact disk (CD-rom), a compact Disc (rom), etc.), a digital versatile disk, a Blu-ray (registered trademark) disk), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage media. Storage 1003 may also be referred to as secondary storage.

The communication device 1004 is hardware (transmission/reception device) for performing communication between computers via a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like, for example. The communication device 1004 may be configured to include a high-Frequency switch, a duplexer, a filter, a Frequency synthesizer, and the like, for example, in order to realize Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD). For example, the transmission/

reception antennas

101 and 201, the

amplifier units

102 and 202, the transmission/

reception units

103 and 203, the transmission line interface 106, and the like described above may be implemented by the communication device 1004.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a key, a sensor, and the like) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

The processor 1001 and the memory 1002 are connected to each other via a bus 1007 for communicating information. The bus 1007 may be constituted by 1 bus or by buses different among devices.

The radio base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a Digital Signal Processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and a part or all of the functional blocks may be implemented by the hardware. For example, the processor 1001 may be implemented with at least 1 of these hardware.

(modification example)

In addition, terms described in the specification and/or terms necessary for understanding the specification may be replaced with terms having the same or similar meanings. For example, the channels and/or symbols may also be signals (signaling). Further, the signal may also be a message. The Reference Signal can also be simply referred to as RS (Reference Signal), and may also be referred to as Pilot (Pilot), Pilot Signal, etc. according to the applied standard. Further, a Component Carrier (CC) may also be referred to as a cell, a frequency Carrier, a Carrier frequency, and the like.

The radio frame may be configured of 1 or more periods (frames) in the time domain. The 1 or more periods (frames) constituting the radio frame may also be referred to as subframes. Further, the subframe may be formed of 1 or more slots in the time domain. The subframe may be a fixed duration (e.g., 1ms) that is not dependent on a parameter set (Numerology).

Further, the slot may be formed of 1 or more symbols in the time domain (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, or the like). Also, the slot may be a time unit based on a parameter set (Numerology). Further, a slot may contain multiple mini-slots (mini-slots). Each mini-slot may be composed of 1 or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot.

The radio frame, subframe, slot, mini-slot, and symbol all represent a unit of time when a signal is transmitted. The radio frame, subframe, slot, mini-slot, and symbol may also use other designations corresponding to each. For example, 1 subframe may also be referred to as a Transmission Time Interval (TTI), a plurality of consecutive subframes may also be referred to as a TTI, and 1 slot or 1 mini-slot may also be referred to as a TTI. That is, the subframe and/or TTI may be a subframe (1ms) in the conventional LTE, may be a period shorter than 1ms (for example, 1 to 13 symbols), or may be a period longer than 1 ms. Note that the unit indicating TTI may be referred to as a slot (slot), a mini-slot (mini-slot), or the like instead of a subframe.

Here, the TTI refers to, for example, the minimum time unit of scheduling in wireless communication. For example, in the LTE system, the radio base station performs scheduling for allocating radio resources (such as a frequency bandwidth and transmission power usable by each user terminal) to each user terminal in units of TTIs. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a channel-coded data packet (transport block), code block, and/or code word, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, the time domain (e.g., number of symbols) to which a transport block, code block, and/or codeword is actually mapped may be shorter than the TTI.

In addition, in a case where 1 slot or 1 mini-slot is referred to as a TTI, 1 or more TTIs (i.e., 1 or more slots or 1 or more mini-slots) may be a minimum time unit of scheduling. In addition, the number of slots (mini-slot number) constituting the minimum time unit of the schedule may be controlled.

The TTI having a duration of 1ms may also be referred to as a normal TTI (TTI in LTE rel.8-12), a standard (normal) TTI, a long (long) TTI, a normal subframe, a standard (normal) subframe, or a long (long) subframe, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial TTI, a shortened subframe, a short subframe, a mini-slot, a sub-slot, or the like.

In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be replaced with a TTI having a time length exceeding 1ms, and a short TTI (e.g., a shortened TTI, etc.) may be replaced with a TTI having a TTI length smaller than that of the long TTI and equal to or longer than 1 ms.

A Resource Block (RB) is a Resource allocation unit in the time domain and the frequency domain, and may include 1 or a plurality of consecutive subcarriers (subcarriers) in the frequency domain. In addition, an RB may include 1 or more symbols in the time domain, and may have a length of 1 slot, 1 mini-slot, 1 subframe, or 1 TTI. Each of the 1 TTI and 1 subframe may be formed of 1 or more resource blocks. In addition, 1 or more RBs may also be referred to as Physical Resource Blocks (PRBs), Sub-Carrier groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, and the like.

In addition, a Resource block may be composed of 1 or more Resource Elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

The structure of the radio frame, the subframe, the slot, the mini slot, the symbol, and the like is merely an example. For example, the structure of the number of subframes included in the radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like can be variously modified.

The information, parameters, and the like described in the present specification may be expressed by absolute values, relative values to predetermined values, or other corresponding information. For example, the radio resource may be indicated by a predetermined index.

The names used for the parameters and the like in the present specification are not limitative names in any point. For example, various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), and the like) and information elements can be identified by all appropriate names, and thus various names assigned to these various channels and information elements are not limitative names in any point.

Information, signals, and the like described in this specification can be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

Further, information, signals, etc. may be output from a higher layer to a lower layer and/or from a lower layer to a higher layer. Information, signals, and the like may be input and output via a plurality of network nodes.

The information, signals, and the like to be input and output may be stored in a specific area (for example, a memory) or may be managed by a management table. Information, signals, etc. that are input and output may also be overwritten, updated, or added. The outputted information, signal, etc. may be deleted. The input information, signal, and the like may be transmitted to other devices.

The information notification is not limited to the embodiments and modes described in the present specification, and may be performed by other methods. For example, the notification of the Information may be implemented by physical layer signaling (e.g., Downlink Control Information (DCI)), Uplink Control Information (UCI), higher layer signaling (e.g., RRC (Radio Resource Control)) signaling, broadcast Information (Master Information Block, System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.

In addition, physical Layer signaling may also be referred to as L1/L2 (Layer 1/Layer 2)) control information (L1/L2 control signals), L1 control information (L1 control signals), and the like. The RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like. Further, the MAC signaling may be notified using, for example, a MAC Control Element (MAC CE (Control Element)).

Note that the notification of the predetermined information (for example, the notification of "X") is not limited to the explicit notification, and may be performed implicitly (for example, by not notifying the predetermined information or by notifying other information).

The determination may be made by a value (0 or 1) represented by 1 bit, by a true-false value (Boolean) represented by true (true) or false (false)), or by a comparison of numerical values (e.g., with a prescribed value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, is intended to be broadly interpreted as representing instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

Further, software, instructions, information, etc. may be transmitted or received via a transmission medium. For example, where the software is transmitted from a website, server, or other remote source using wired and/or wireless techniques (e.g., coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless techniques (e.g., infrared, microwave, etc.), such wired and/or wireless techniques are included in the definition of transmission medium.

The terms "system" and "network" used in this specification may be used interchangeably.

In the present specification, terms such as "Base Station (BS)", "radio Base Station", "eNB", "gNB", "cell", "sector", "cell group", "carrier", and "component carrier" are used interchangeably. A base station may also be referred to by terms such as a fixed station (fixed station), NodeB, eNodeB (eNB), access point (access point), transmission point, reception point, femto cell, and small cell.

A base station can accommodate 1 or more (e.g., three) cells (also referred to as sectors). In the case where a base station accommodates multiple cells, the coverage area of the base station as a whole can be divided into multiple smaller areas, and each smaller area can also be provided with communication services through a base station subsystem (e.g., a small indoor base station (RRH) Remote Radio Head) — terms such as "cell" or "sector" refer to a portion or all of the coverage area of the base station and/or base station subsystem that is performing communication services in that coverage area.

In this specification, terms such as "Mobile Station (MS)", "User terminal (User terminal)", "User Equipment (UE)", and "terminal" are used interchangeably.

A mobile station is also sometimes referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, or some other suitable terminology.

A base station and/or a mobile station may also be referred to as a transmitting apparatus, a receiving apparatus, and/or the like.

Note that the radio base station in this specification may be replaced with a user terminal. For example, the aspects and embodiments of the present invention may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (Device-to-Device (D2D)). In this case, the user terminal 20 may be configured to have the functions of the radio base station 10. The terms "upstream" and "downstream" may be changed to "side". For example, the uplink channel may be replaced with a side channel (side channel).

Similarly, the user terminal in this specification may be replaced with a radio base station. In this case, the radio base station 10 may be configured to have the functions of the user terminal 20.

In the present specification, it is assumed that the operation performed by the base station is sometimes performed by its upper node (upper node) depending on the case. In a network including 1 or more network nodes (network nodes) having a base station, it is apparent that various operations performed for communication with a terminal may be performed by the base station, 1 or more network nodes other than the base station (for example, an MME (Mobility Management Entity), an S-GW (Serving-Gateway), and the like are considered, but not limited thereto), or a combination thereof.

The aspects and embodiments described in this specification may be used alone, may be used in combination, or may be switched with execution. Note that, the order of the processing procedures, sequences, flowcharts, and the like of the respective modes and embodiments described in the present specification may be changed as long as they are not contradictory. For example, elements of the method described in the present specification are presented in the order of illustration, and are not limited to the specific order presented.

The aspects/embodiments described in this specification can be applied to LTE (Long Term Evolution), LTE-a (LTE-Advanced), LTE-B (LTE-Beyond), SUPER3G, IMT-Advanced, 4G (4th generation Mobile communication System), 5G (5th generation Mobile communication System), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New Radio Access), FX (next generation Radio Access), GSM (Global System for Mobile communication), CDMA (Radio Broadband) System (Global System for Mobile communication), CDMA (Mobile Broadband Access, CDMA 2000), etc.) IEEE 802.11(Wi-Fi (registered trademark)), IEEE 802.16(WiMAX (registered trademark)), IEEE802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and systems using other appropriate wireless communication methods and/or next-generation systems expanded based thereon.

As used in this specification, a statement that "is based on" does not mean "is based only on" unless explicitly stated otherwise. In other words, the expression "based on" means both "based only on" and "based at least on".

Any reference to the use of "first," "second," etc. elements in this specification is not intended to limit the number or order of such elements in a comprehensive manner. These designations may be used herein as a convenient means of distinguishing between two or more elements. Thus, reference to first and second elements does not mean that only two elements may be employed or that the first element must precede the second element in some fashion.

The term "determining" used in the present specification may include various operations. For example, "determining" may be considered as "determining" in terms of calculating (computing), processing (processing), deriving (deriving), investigating (visualizing), retrieving (navigating) (e.g., retrieving in a table, database or other data structure), confirming (authenticating), and the like. The "determination (decision)" may be regarded as "determination (decision)" performed by receiving (e.g., receiving information), transmitting (e.g., transmitting information), inputting (input), outputting (output), accessing (accessing) (e.g., accessing data in a memory), and the like. In addition, the "judgment (decision)" may be regarded as "judgment (decision)" to be performed, for example, resolution (resolving), selection (selecting), selection (breathing), establishment (evaluating), and comparison (comparing). That is, "judgment (decision)" may regard some operations as making "judgment (decision)".

The terms "connected", "coupled", and the like, or all variations thereof, used in this specification mean all connections or couplings, direct or indirect, between two or more elements, and can include a case where 1 or more intermediate elements exist between two elements that are "connected" or "coupled" to each other. The coupling or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access".

In this specification, where 2 elements are connected, they can be considered to be "connected" or "joined" to each other using one or more wires, cables, and/or printed electrical connections, and as a few non-limiting and non-exhaustive examples, using electromagnetic energy or the like having wavelengths in the wireless frequency domain, the microwave region, and/or the optical (both visible and non-visible) region.

In the present specification, the term "a is different from B" may also mean "a is different from B". The terms "isolated", "coupled" and the like are to be construed similarly.

In the case where the terms "including", "containing" and "comprising" are used in the present specification or claims, these terms are intended to be inclusive in the same manner as the term "comprising". Further, the term "or" as used in this specification or the claims is not a logical exclusive or.

The present invention has been described in detail above, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

Claims

1. A terminal, characterized by having:

a transmission unit configured to transmit an uplink control channel spanning a plurality of slots; and

and a control unit configured to control frequency hopping of the uplink control channel among the plurality of slots based on information identical to information on frequency resources when frequency hopping within a slot is applied.

2. The terminal of claim 1,

the control unit maps the uplink control channel to a frequency resource hopped per each slot in the hopping among the plurality of slots.

3. The terminal of claim 1 or claim 2,

the control unit determines the frequency hopping pattern of the uplink control channel among the plurality of slots, regardless of whether the slot is a slot capable of transmitting the uplink control channel.

4. The terminal of claim 1 or claim 2,

the information on the frequency resources is specified from one or more parameters set by higher layer signaling using a predetermined field in the downlink control information.

5. A wireless communication method for a terminal, comprising:

a step of transmitting an uplink control channel spanning a plurality of slots; and

and controlling frequency hopping of the uplink control channel among the plurality of time slots based on the same information as information on the frequency resource when frequency hopping within a time slot is applied.

6. A wireless communication system comprising a terminal and a base station, characterized in that,

the terminal is provided with:

a control unit configured to control frequency hopping of the uplink control channel among the plurality of time slots based on information identical to information on frequency resources when frequency hopping within a time slot is applied,

the base station is provided with:

and a reception unit configured to receive the uplink control channel frequency-hopped among a plurality of slots.